Conditions for Running the DTC

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The TCM runs the program to detect an internal condition at key ON. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range.
Ignition voltage is between 8.0 and 18.0 volts - DTC P062F only.